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THE MYSTERY OF MATTER: SEARCH FOR THE ELEMENTS | Changing the Role of Scientists | PBS

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Premieres Wednesday, August 19, 2015, 8:00-11:00 p.m. ET on PBS.
In 1913, English graduate student Harry Moseley redefined the Periodic Table, using X-rays to reveal the importance of atomic number – the number of protons in an atom’s nucleus. But when World War I broke out, Moseley enlisted and was killed by a sniper’s bullet in Turkey. His shocking death at age 27 forever changed the way Britain and other countries thought about the role of scientists in war.
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